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Single-surface adhesive tape for lithium battery and preparation method for single-surface adhesive tape

A lithium battery, single-sided technology, applied in the direction of adhesive, adhesive type, film/sheet adhesive, etc., can solve the problem that the electrode group and the outer packaging material are prone to relative displacement and do not meet the requirements of the lithium battery production process , Affect the appearance and performance of lithium batteries and other issues, to achieve the effect of good viscosity, long service life, and stable bonding

Active Publication Date: 2015-04-29
DONGGUAN AOZON ELECTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no fixing between the electrode group and the outer packaging material of the lithium battery, and the relative displacement between the electrode group and the outer packaging material is prone to occur, poor drop resistance, low safety, short service life, and unstable quality
[0004] The reason why there is no tape or glue between the electrode group and the outer packaging material is because the components in the existing tape or glue will chemically react with the electrolyte in the lithium battery, thereby affecting the performance of the lithium battery
[0005] In addition, if you want to bond the pole group and the outer packaging material, you usually need to use double-sided tape, and when you use double-sided tape, the bonding position of the pole group and the outer packaging material will be fixed by the double-sided tape, and you can no longer The position of the electrode group and the outer packaging material is adjusted, thereby affecting the appearance and performance of the lithium battery, which does not meet the production process requirements of the lithium battery, and there is a need for improvement

Method used

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  • Single-surface adhesive tape for lithium battery and preparation method for single-surface adhesive tape
  • Single-surface adhesive tape for lithium battery and preparation method for single-surface adhesive tape
  • Single-surface adhesive tape for lithium battery and preparation method for single-surface adhesive tape

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A single-sided adhesive tape for lithium batteries of the present invention comprises a sealing hot-melt pressure-sensitive adhesive layer and a base film layer, and the sealing hot-melt pressure-sensitive adhesive layer and the base film layer are connected to each other.

[0039] The sealing hot-melt pressure-sensitive adhesive layer of the present embodiment comprises the following raw materials in mass percentage:

[0040]

[0041] The base film layer in this embodiment is a PET film layer.

[0042] The base film layer in this embodiment has a thickness of 10 microns, and the sealing hot-melt pressure-sensitive adhesive layer has a thickness of 40 microns.

[0043] The average molecular weight of the SIS rubber elastic body I in this embodiment is 320,000, and the average molecular weight of the SIS rubber elastic body II is 160,000.

[0044] A preparation method of single-sided adhesive tape for lithium batteries, comprising the following processing steps:

[00...

Embodiment 2

[0052] A single-sided adhesive tape for lithium batteries of the present invention comprises a sealing hot-melt pressure-sensitive adhesive layer and a base film layer, and the sealing hot-melt pressure-sensitive adhesive layer and the base film layer are connected to each other.

[0053] Wherein, the sealing hot-melt pressure-sensitive adhesive layer includes the following raw materials in mass percentage:

[0054]

[0055]

[0056] The base film layer in this embodiment is a BOPP film layer.

[0057] The thickness of the base film layer in this embodiment is 20 microns, and the thickness of the sealing hot-melt pressure-sensitive adhesive layer is 60 microns.

[0058] The average molecular weight of the SIS rubber elastic body I in this embodiment is 370,000, and the average molecular weight of the SIS rubber elastic body II is 280,000.

[0059] A preparation method of single-sided adhesive tape for lithium batteries, comprising the following processing steps:

[006...

Embodiment 3

[0067] A single-sided adhesive tape for lithium batteries of the present invention comprises a sealing hot-melt pressure-sensitive adhesive layer and a base film layer, and the sealing hot-melt pressure-sensitive adhesive layer and the base film layer are connected to each other.

[0068] The sealing hot-melt pressure-sensitive adhesive layer of the present embodiment comprises the following raw materials in mass percentage:

[0069]

[0070] The base film layer in this embodiment is a PET film layer.

[0071] The thickness of the base film layer in this embodiment is 30 microns, and the thickness of the sealing hot-melt pressure-sensitive adhesive layer is 90 microns.

[0072] The average molecular weight of the SIS rubber elastic body I in this embodiment is 350,000, and the average molecular weight of the SIS rubber elastic body II is 250,000.

[0073] A preparation method of single-sided adhesive tape for lithium batteries, comprising the following processing steps:

...

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Abstract

The invention relates to a single-surface adhesive tape for a lithium battery. The single-surface adhesive tape comprises a sealing hot-melt pressure-sensitive adhesive layer and a base film layer, wherein the sealing hot-melt pressure-sensitive adhesive layer and the base film layer are connected with each other. The single-surface adhesive tape is high in adhesiveness, can resist corrosion of electrolyte of the lithium battery without generating chemical reaction with the electrolyte in the lithium battery, and keeps the performance of the lithium battery and the quality of the lithium battery. When the single-surface adhesive tape is used, the adhesive surface is attached to a pole group, and the pole group is wrapped by an external packaging material; furthermore, the relative position between the pole group and the external packaging material is adjusted, and the lithium battery is heated and pressurized; glue can overflow out of the two side surfaces of the single-surface adhesive tape to adhere the pole group and the external packaging material, so that the single-surface adhesive tape is convenient to use and meets the requirement of the production technology of the lithium battery; the pole group of the lithium battery and the external packaging material can be fixed by the single-surface adhesive tape and are firmly adhered, so that no relative displacement is generated; the single-surface adhesive tape is high in anti-falling capacity, high in safety, long in service life and stale in quality.

Description

technical field [0001] The invention relates to the technical field of adhesive supplies, in particular to a single-sided adhesive tape for lithium batteries and a preparation method thereof. Background technique [0002] Due to its high energy density, lithium batteries can be recycled many times, have a long life and low pollution, and are widely used in mobile phones, notebooks and other fields. With the improvement of science and technology, the requirements for lithium batteries in various fields are getting higher and higher, among which high requirements are put forward for the anti-drop performance of lithium batteries, which determines the stability and safety of lithium batteries. The anti-drop performance of lithium batteries is mainly determined by the adhesion between the electrode group and the outer packaging material. If the adhesion between the battery electrode group and the outer packaging material is not good, when the battery moves horizontally or vertic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J157/02C09J153/02C09J123/20C09J123/06C09J123/12
Inventor 陆金亮王宜金郭晓烁张涛辉
Owner DONGGUAN AOZON ELECTRONICS MATERIAL
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